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by Jojjec1
Mon Feb 16, 2015 3:52 pm
Forum: Bare metal, Assembly language
Topic: RPi 2 and OpenOCD
Replies: 25
Views: 14345

Re: RPi 2 and OpenOCD

I have enabled JTAG on the GPIO.
I use GPIO22-27 and I can assume that atleast some pins work since I've been able to recognice the dap tap id (0x4ba00477).
Can I use get JTAG interface on the GPU to debug the CPU? It is technically possible with JTAG but I don't think the pi is built for it.
by Jojjec1
Sun Feb 15, 2015 9:09 pm
Forum: Bare metal, Assembly language
Topic: RPi 2 and OpenOCD
Replies: 25
Views: 14345

Re: RPi 2 and OpenOCD

mimi123, care to elaborate? Is jtag_init an internal initialization hook in OpenOCD? Looked at cortex_a.c and saw that there are some cortex a8 and cortex r4 specific details. You mention PERI_BASE, has that something to do with JTAG? I use a Olimex usb jtag tiny, I do not use the bcm2835gpio OpenOC...
by Jojjec1
Sun Feb 15, 2015 10:57 am
Forum: Bare metal, Assembly language
Topic: RPi 2 and OpenOCD
Replies: 25
Views: 14345

RPi 2 and OpenOCD

Hi, Has anyone been able to debug the RPi 2 with OpenOCD yet? I have been looking for a target config with no luck. I tried to modify another cortex target config but I do not have all details to succeed. The following is a mix rasperrypi and imx6 config. From my understanding there is alot of chang...

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